• 专利标题:   Fluorine-free solar battery back plate useful in solar cell module, comprises inner layer and outer layer from inside to outside; raw material for preparing inner layer includes polyolefin.
  • 专利号:   CN112786721-A, CN112786721-B
  • 发明人:   CAI S, JIAO H
  • 专利权人:   ZHEJIANG ZHONGJU MATERIALS CO LTD
  • 国际专利分类:   B29D007/01, C08K003/04, C08K003/22, C08K003/34, C08L023/08, C08L023/12, C08L023/16, C08L053/00, H01L031/048, H01L031/049, H01L031/18
  • 专利详细信息:   CN112786721-A 11 May 2021 H01L-031/048 202151 Pages: 12 Chinese
  • 申请详细信息:   CN112786721-A CN10016854 07 Jan 2021
  • 优先权号:   CN10016854

▎ 摘  要

NOVELTY - Fluorine-free solar battery back plate comprises inner layer and outer layer from inside to outside; the raw material for preparing the inner layer includes polyolefin; the raw material for preparing the outer layer includes polyolefin and inorganic auxiliary agent. USE - The battery back plate is useful in solar cell module (claimed). ADVANTAGE - The battery back plate: excellent water vapor barrier property, toughness and interlayer peeling property. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing the fluorine-free solar battery back plate comprising (1) stirring and mixing the materials in inner layer at speed of 500-1000 revolutions/minute according to the above-mentioned ratio to obtain premix, conveying the prepared premix to granulating extruder, extruding and granulating at 180-240 degrees C to prepare compound-A, (2) stirring and mixing the materials in the outer layer at speed of 500-1000 revolutions/minute according to the above-mentioned ratio to obtain premix, conveying the prepared premix to granulating extruder, extruding and granulating at 180-240 degrees C to prepare compound-B, and (3) respectively transferring the prepared compound-A and compound-B to extruder-A and extruder-B of co-extrusion backplane production line, melting, plasticizing, extruding through common rectangular mold to obtain sheet-type melt, cooling and shaping the sheet-type melt by cooling roller, rolling or cutting sheet, obtaining fluoride-free solar battery back plate; and (2) solar cell module comprising the fluorine-free solar cell back plate or composite back plate made of fluorine-free solar cell back plate.